JP2859575B2 - Fire fighting system - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fire extinguishing system, and more particularly to a fire extinguishing system that can extinguish a fire early, does not malfunction, and can minimize water damage.

[0002]

2. Description of the Related Art As a conventional fire extinguishing system, a water-bubble fire extinguishing system and a powder / gas fire extinguishing system are known.

[0003] Sprinkler fire extinguishers are a typical example of a water bubble fire extinguishing system. This sprinkler fire extinguisher uses water or foam as a fire extinguishing agent, and a plurality of sprinkler heads are arranged on a pipe attached to a ceiling or the like. The sprinkler head has a fusible portion (deflector) that melts by heat. When a fire occurs and the temperature rises, the fusible portion is melted or broken. When the fusible portion dissolves, water and bubbles constantly pressurized in the pipe are released from the sprinkler head to automatically extinguish the fire. In other words, this sprinkler fire extinguishing system, after a fire occurs and the flame reaches the ceiling,
The sprinkler head operates by melting the fusible portion of the sprinkler head by the heat of the flame.

[0004] Powder and gas fire extinguishing systems use powder or gas as a fire extinguishing agent. This fire extinguishing system is used for extinguishing a fire in a space having some degree of airtightness, because powder or gas is used as a fire extinguishing agent. Specifically, it is used in computer rooms, underground parking lots, electric rooms, and the like.

[0005]

However, the above-mentioned conventional sprinkler fire extinguisher is operated by the flame of the fire reaching the ceiling and melting the fusible portion of the sprinkler head. At that point, the fire may already be widespread. In such a case, even if the fire is successfully extinguished by the operation of the sprinkler fire extinguisher, the damage caused by the fire will be enormous, especially when expensive products etc. are stored and manufactured in the fire extinguishing area. The damage is immense. In addition, a simultaneous open-type sprinkler fire extinguisher,
In the case of a sprinkler fire extinguishing system in which all sprinkler heads operate when one sprinkler head operates, water is also radiated to products, etc. in places where the fire has not yet spread, causing damage (water damage). ) Is enlarged.

In addition, if a substance that is difficult to extinguish once it has ignited exists in the area to be extinguished, it is necessary to operate a fire extinguisher before a flame is generated. However, as described above, since the conventional sprinkler fire extinguishing device does not operate unless a flame is generated, it cannot be applied to an area where such a fire-extinguishing substance exists. In particular, in the case of a substance which is extremely flammable, the fire spread speed becomes extremely high, so that the conventional sprinkler fire extinguisher may cause serious damage by fire.

[0007] Furthermore, the conventional sprinkler fire extinguisher is:
Since the pressurized fire extinguishing agent is always filled up to the sprinkler head, the pressurized fire extinguishing agent may be released if the sprinkler head is damaged for any reason other than fire. When the fire extinguishing agent is released due to the malfunction of the sprinkler fire extinguishing system, the products in the fire extinguishing area are damaged by water damage and the like. The damage will be enormous.

In addition, since the conventional powder / gas fire extinguishing equipment uses powder or gas as a fire extinguishing agent, its application is not limited to an airtight space, and handling of the fire extinguishing agent is extremely inconvenient. There's a problem.

Further, in order to achieve early detection and extinguishing of a fire, a plurality of smoke detectors are provided in an area to be extinguished, and a fire extinguishing system is operated using a smoke detection signal from these smoke detectors. Can be considered. For example, as shown in FIG. 6, a plurality of radiation areas d1, which form a fire extinguishing area D,
One smoke detector 100 is provided in each of d2, d3, and d4. Then, smoke is generated from the fire occurrence point P, and when any of the four smoke detectors 100 detects the smoke, a smoke detection signal is transmitted. When the smoke detection signal is issued,
As shown in FIG. 5, all of the plurality of ejection heads 101 provided in the fire extinguishing target area D are operated to
, That is, the fire extinguishing agent is discharged to all of the radiation areas d1, d2, d3, and d4. However, this method has a problem in that the fire extinguishing agent is also discharged to the non-fire spread portion other than the fire occurrence point P, and all products in the fire extinguishing target area D are damaged by water. In addition, even when the smoke detector 100 emits a smoke detection signal due to malfunction, the fire extinguishing agent is released and water damage may occur.

Accordingly, an object of the present invention is to solve the above-mentioned various problems, to detect a fire early and extinguish it immediately, to minimize water damage caused by a fire extinguishing agent, and to malfunction. An object of the present invention is to provide a fire extinguishing system that can surely prevent water damage caused by fire.

[0011]

SUMMARY OF THE INVENTION A fire suppression system according to the present invention receives a plurality of smoke detection means for transmitting a smoke detection signal when smoke is detected, and smoke detection signals from at least two of the smoke detection means. In this case, there is provided a control means for transmitting a release signal, and a fire extinguishing means which operates in response to the release signal and discharges a fire extinguishing agent.

In the fire extinguishing system according to the present invention, the control means transmits a standby signal when a smoke detection signal is received from any one of the smoke detection means, and any of the other control means. Second control means for transmitting an emission signal when a smoke detection signal from the one smoke detection means is received, wherein the fire extinguishing means includes a transport line for transporting a fire extinguishing agent, and a First valve means provided on the way and opened in response to the standby signal; and second valve provided in the transport line downstream of the first valve means and opened in response to the release signal Means.

[0013] In the fire extinguishing system according to the present invention, the fire extinguishing system further includes a discriminating unit that specifies a smoke detecting unit that has transmitted the smoke detecting signal, and each of the plurality of radiating zones forming the fire extinguishing target zone of the fire extinguishing system. A plurality of the smoke detectors, and a plurality of branch lines are formed by branching the transport line downstream of the first valve means, and the second valve means is provided for each of the plurality of branch lines. And distributing the plurality of branch lines to the plurality of radiation areas, wherein the second control means receives a smoke detection signal from at least two smoke detection means provided in a common radiation area. An emission signal is transmitted to the second valve means of the branch line distributed to the common radiation area.

Further, in the fire extinguishing system according to the present invention, the control means includes a number calculating means for calculating the number of times of emission of the emission signal, and a number setting means for setting a maximum value of the number of times of emission. When the number of times reaches the maximum value, no emission signal is transmitted.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS First Embodiment Hereinafter, a first embodiment of a fire extinguishing system according to the present invention will be described with reference to FIGS. FIG. 1 is a schematic system diagram of a fire extinguishing system according to the present embodiment. In FIG. 1, reference numeral 1 denotes a fire extinguishing agent storage tank in which a fire extinguishing agent is stored. In this case, a fire extinguishing agent such as water and a foaming agent is used as the fire extinguishing agent. For example, when the fire extinguishing target is an oil fire such as gasoline, a foaming agent is used.

The inlet end of the suction pipe 2 is submerged in the fire extinguishing agent in the fire extinguishing agent storage tank 1, and the outlet end of the suction pipe 2 is connected to a fire extinguishing pump device 3. The fire extinguishing pump device 3 includes a fire extinguishing agent storage tank 1.
The outlet end of a discharge pipe 4 for discharging the fire extinguishing agent sucked up from is connected. A gate valve 5 is provided in the middle of the discharge pipe 4, and the gate valve 5 is always open.
A check valve 6 is provided on the upstream side of the gate valve 5 (on the fire extinguishing pump device 3 side), and the check valve 6 prevents backflow of the fire extinguishing agent from the downstream side to the upstream side. A priming tank 8 is connected to a discharge pipe 4 between the check valve 6 and the fire extinguishing pump device 3 via a branch pipe 7. A starting pressure air tank 10 is connected to the discharge pipe 4 downstream of the gate valve 5 via a branch pipe 9, and a gate valve 11 which is always open is provided in the middle of the branch pipe 9. Is provided.

At the outlet end of the discharge pipe 4, a first valve device 12 is provided. The first valve device 12 has a gate valve 13 which is always open, and is provided downstream of the gate valve 13. Is provided with an alarm valve 14 for detecting flowing water. Further downstream of the alarm valve 14 is a first simultaneous release valve 15.
The first simultaneous release valve 15 is connected to one end of a first activation pipe 16 branched from the discharge pipe 4. In the middle of the first starting pipe 16, there is provided a first starting electromagnetic valve 17 that is opened when the first simultaneous opening valve 15 is operated.

An outlet end of the first simultaneous release valve 15 is connected to an inlet end of a transport pipe 18, and a gate valve 19 which is always open is provided in the middle of the transport pipe 18. A test circuit 20 is provided in the transport pipe 18 between the gate valve 19 and the first simultaneous opening valve 15.

Three branch pipes 21a, 21b and 21c are connected to the transport pipe 18 downstream of the gate valve 19, and a second simultaneous release valve is provided in the middle of these branch pipes 21a, 21b and 21c. 22a, 22b and 22c are provided respectively. In addition, these second simultaneous release valves 22
a, 22b, and 22c have branch pipes 21a, 21b, 2
2c starting pipes 23a, 23 further branched from 1c
b and 23c are connected to one end. In the middle of these second start-up pipes 23a, 23b, 23c, there are provided second start-up solenoid valves 24a, 24b, 24c which are opened when the second simultaneous release valves 22a, 22b, 22c are operated. .

In the middle of the branch pipes 21a, 21b, 21c downstream of the second simultaneous opening valves 22a, 22b, 22c, the test gate valves 25a, 25b, 2
5c is provided. These test gate valves 25
a, 25b, 25c and the second simultaneous release valves 22a, 22b,
In the branch pipes 21a, 21b, 21c between the pipes 22c and 22c,
Test valves 27a, 27b, 27c which are always closed via test pipes 26a, 26b, 26c are provided.

Branch pipes 21a, 21b, and 21c downstream of the test gate valves 25a, 25b, and 25c are further branched into four discharge pipes 28a, 28b, and 28c, respectively.
Is connected. These discharge pipes 28a, 28b,
A discharge head 29 for discharging the fire extinguishing agent is provided at the outlet end of 28c.
a, 29b and 29c are provided.

Further, the fire extinguishing system according to the present embodiment includes a plurality of smoke detectors 30 provided near the ceiling of the fire extinguishing target area, and these smoke detectors 30 are transmitted to the control device 31 via signal lines. It is connected. Also, the first
The starting solenoid valve 17, the second starting solenoid valves 24a and 24b,
24c, starting pressure air tank 10 and fire extinguishing pump device 3
Are also connected to the control device 31 via signal lines. Further, a fire alarm device 32 is connected to the control device 31 via a signal line. Note that the sensitivity of the smoke detector 30 can be adjusted, and the sensitivity is appropriately adjusted in accordance with the properties of the commodities in the fire extinguishing target area (eg, the concentration of smoke generated at the time of fire).

FIG. 2 is a plan view showing a schematic system of the fire extinguishing system according to the present embodiment. As can be seen from this figure, a plurality of smoke detectors 30 are provided in a predetermined arrangement. That is, four radiation areas d in the fire extinguishing area D
A total of four smoke detectors 30 are provided in the central portion A of 1, d2, d3, and d4, and a boundary between the radiation area d1 and the radiation area d3 and a boundary between the radiation area d2 and the radiation area d4. A total of two smoke detectors 30 are provided in each of the intermediate parts B, and one smoke detector 30 is provided in the central part C of the fire extinguishing target area D.

Next, the operation of the fire extinguishing system according to the present embodiment will be described. In normal times, the inside of each of the discharge pipe 4 from the check valve 6 to the first simultaneous release valve 15 and the first start-up pipe 16 branched from the discharge pipe 4 shown in FIG. Extinguishing media is filled. The pressurized fire extinguishing agent is also applied to the branch pipe 9 branched from the discharge pipe 4 and the starting pressure air tank 10 connected to one end of the branch pipe 9. On the other hand, the transport pipe 18, the branch pipes 21a, 21b, 21c, the discharge pipes 28a, 28b,
8c and the like are normally empty pipes. The fire extinguishing pump device 3 is normally stopped.

Next, a case where a fire occurs will be described. Here, it is assumed that a fire has occurred at a point P in the radiation section d1 as shown in FIG.

When a fire occurs at the point P, smoke from the fire rises to the ceiling. The smoke that reaches the ceiling diffuses radially along the surface of the ceiling. The smoke diffused in the radiation direction first reaches the smoke detector 30 in the central portion C of the fire extinguishing target area D, and the smoke detector 30 detects the smoke and transmits a first smoke detection signal. Here, each smoke detector 30
Has a microchip inside, and each smoke detector 3
A unique signal for each zero can be transmitted. That is, each smoke detector 30 has a unique address. Then, the first smoke detection signal is transmitted to the control device 31 via the signal line, and the control device 31 that has received the first smoke detection signal transmits an alarm signal.

The alarm signal is transmitted to the fire alarm device 32 via the signal line, and the fire alarm device 32 that has received the alarm signal issues a first alarm. This first alarm may be sounded to indicate the occurrence of a fire. The content of the sound can be, for example, "Fire has occurred in the fire target area D."

When a further time elapses after the occurrence of the fire, the smoke diffused in the radial direction along the ceiling reaches the smoke detector 30 at the intermediate portion B at the boundary between the radiation area d1 and the radiation area d3. The detector 30 detects smoke and emits a second smoke detection signal. The second smoke detection signal is transmitted to the control device 31 via the signal line, and the control device 31 that has received the second smoke detection signal transmits a standby signal.

This standby signal is transmitted to the fire alarm device 32 via the signal line, and the fire alarm device 32 that has received the standby signal issues a second alarm. This second alarm is also the first
As in the case of the alarm of the above, the sound can be made, for example, "The fire occurrence location is the radiation area d1 or the radiation area d2 in the fire target area D."

On the other hand, the standby signal from the control device 31 is transmitted to the first activation solenoid valve 17 via a signal line,
The voltage is applied by the reception of the standby signal, and the first activation electromagnetic valve 17 is opened. When the first start-up electromagnetic valve 17 is opened, the pressurized fire extinguishing agent inside the first starting pipe 16 and the like is sent to the first simultaneous opening valve 15 and the pressure of the sent fire extinguishing agent causes the fire extinguishing agent to move to the first state. (1) The simultaneous release valve 15 is opened.

When the first starting electromagnetic valve 17 and the first simultaneous opening valve 15 are opened, the pressure of the fire extinguishing agent in the discharge pipe 4 upstream of the first starting electromagnetic valve 17 decreases, The pressure of the fire extinguishing agent in the branch pipe 9 connected to the discharge pipe 4 also decreases at the same time. Then, the pressure in the starting pressure air tank 10 also decreases, and when this pressure reaches a predetermined value or less, the starting pressure air tank 10 transmits a pressure decrease signal. The pressure drop signal is transmitted to the control device 31 via the signal line, and the control device 31 that has received the pressure drop signal transmits a pump start signal. This pump start signal is transmitted to the fire extinguishing pump device 3 via the signal line, and the fire extinguishing pump device 3 is started.

When the fire-extinguishing pump device 3 is started, the fire extinguishing agent sucked up from the fire extinguishing agent storage tank 1 via the suction pipe 2 is sent to the first simultaneous opening valve 15 in the open state via the discharge pipe 4. The second simultaneous opening valves 22a, 22b, 22c and the second starting electromagnetic valve 24 are sent through the transport pipe 18 and the branch pipes 21a, 21b, 21c.
It is sent to the downstream side of a, 24b and 24c to be in a pressurized state.

When the time elapses after the occurrence of the fire, the smoke due to the fire reaches the smoke detector 30 located at the center A of the radiation area d1, and the smoke detector 30 transmits the third smoke detection signal. . This third smoke detection signal is transmitted to the control device 31 via the signal line.

The control device 31 having received the third smoke detection signal
The three smoke detectors 30 that have transmitted the first and second smoke detection signals that have already been received and the third smoke detection signal that has been received this time have a total of four emission areas d1, d2, d3, and d4. Is determined in which area of. Here, it is assumed that the three smoke detectors 30 provided at the points B and C belong to any adjacent areas.
When the control device 31 determines that all three smoke detectors 30 that have transmitted the first, second, and third smoke detection signals belong to the same radiation area, the radiation area is regarded as a fire occurrence area. Identify and emit a first emission signal. In this case, the radiation area d1 is specified as a fire occurrence area.

The first emission signal is sent via the signal line to the second activation solenoid valve 24a for the radiation area d1, and upon receiving the first emission signal, the second activation solenoid valve 24a
a is released. When the second start-up electromagnetic valve 24a is opened, the pressurized fire extinguishing agent is supplied to the second simultaneous opening valve 22a for the radiation area d1, and the second simultaneous opening valve 22a is opened. When the second simultaneous release valve 22a is opened, the discharge head 2 for the radiation section d1 is released via the discharge pipe 28a.
The extinguishing agent is supplied to 9a, and as shown in FIG. 4, the extinguishing agent is discharged from the discharge head 29a to the radiation area d1. Then, the fire extinguishing agent discharged from the discharge head 29a extinguishes the fire that has occurred at the point P.

On the other hand, the first emission signal is transmitted to the fire alarm device 32 via the signal line, and the fire alarm device 32 that has received the first emission signal issues a third alarm. The third alarm can be sounded in the same manner as the first and second alarms. For example, "the fire extinguishing agent has been released in the radiation area d1 of the fire target area D." .

Further, when the time elapses after the occurrence of the fire, the smoke that has already been generated before the fire is extinguished becomes the radiation area d3.
Reaches the smoke detector 30 installed in the central part A of the vehicle, from which a fourth smoke detection signal is sent to the control device 31. In this case, the control device 31 determines that the radiation area d1 has already been reached.
No further emission signal is issued on condition that the first emission signal is sent to the second starting electromagnetic valve 24. That is, the control means 31 is provided with a number calculation means for calculating the number of emission signal transmissions and a number setting means for setting the maximum value of the number of transmissions. Then, the maximum value of the number of transmissions is set to one by the number setting means, and when the number of transmissions calculated by the number calculation means becomes 1, no further emission signal is transmitted.

As described above, according to the fire extinguishing system according to the present embodiment, the occurrence of a fire is detected by smoke and the extinguishing agent is released, so that the fire can be extinguished in the initial stage after the occurrence of the fire. Fire damage can be minimized, and the amount of fire extinguisher required for fire extinguishing can be minimized. In particular, when a substance that is difficult to extinguish once it ignites exists in the fire extinguishing target area D, this disaster prevention system is extremely effective.

The disaster prevention system according to the present embodiment
Since the fire extinguishing agent does not reach the discharge head in normal times, there is no possibility that the fire extinguishing agent is accidentally discharged even if the discharge head or the like is damaged. In the normal state, the first simultaneous release valve 15 and the second simultaneous release valves 22a, 22b, 22
c constitutes a double barrier, so that even if one of these valves is broken for any reason, the fire extinguishing agent is not accidentally released and the possibility of accidental release is kept very low. .

Further, the disaster prevention system according to the present embodiment
Since water can be used as a fire extinguisher, its application is not limited to airtight spaces.

Further, according to the disaster prevention system according to the present embodiment, the four radiation areas d1, constituting the fire extinguishing area D,
Since the fire extinguishing agent can be discharged only to one radiation area to which the fire occurrence point P belongs out of d2, d3, and d4, water loss due to the discharge of the fire extinguishing agent can be minimized.

As a first modification of this embodiment,
Up to two of the four radiation areas d1, d2, d3, d4 may be extinguished. That is, the maximum value of the number of transmissions is set to two by the number setting means, and no further emission signal is transmitted when the number of transmissions calculated by the number calculation means becomes two.

Next, the operation of the present modification will be described with reference to FIG. Smoke that had already been generated before the fire was extinguished reached the smoke detector 30 installed in the central part A of the radiation area d3, and a fourth smoke detection signal was sent from the smoke detector 30 to the control device 31. In that case, the control device 31 emits a second emission signal. This second emission signal is sent via the signal line to the second activation electromagnetic valve 24c for the radiation area d3, and the second activation electromagnetic valve 24c is opened by receiving the second emission signal. This second activation solenoid valve 24
When c is opened, the pressurized fire extinguishing agent is supplied to the second simultaneous opening valve 22c for the radiation area d3, and the second simultaneous opening valve 22c is opened. When the second simultaneous release valve 22c is opened, the extinguishing agent is supplied to the discharge head 29c for the radiation area d3 via the discharge pipe 28c, and the discharge head 29c
The fire extinguishing agent is released from to the radiation area d3.

Then, the smoke further diffuses and the radiation area d2
When the smoke detectors 30 at the points B and A are reached and further smoke detection signals are sent from these smoke detectors 30 to the control device 31, two emission signals have already been transmitted. Therefore, the control device 31 does not emit a further emission signal (third emission signal).

If the fire extinguishing agent can be released up to the two radiating zones in this way, it is possible to surely extinguish a fire of a substance such as gasoline which has a very fast spreading speed.

As a second modification of the present embodiment,
When receiving the first smoke detection signal, the control unit 31 may transmit both the alarm signal and the standby signal. Then, when the second smoke detection signal is received, the control means 31 transmits a second alarm signal to the fire alarm device 32 instead of the standby signal, and
The fire alarm device 32 that has received the alarm signal of (2) issues the second alarm.

As a third modification of the present embodiment,
The radiating area can be further subdivided so that the fire extinguishing agent can be radiated in each of the subdivided areas.
In this way, water damage caused by the fire extinguishing agent can be further reduced.

Second Embodiment Next, a second embodiment of the fire extinguishing system according to the present invention will be described with reference to FIG. The same members as those in the first embodiment are denoted by the same reference numerals, and detailed description is omitted.

This embodiment is a modification of the first valve device 12 of the first embodiment shown in FIG. 1, and FIG. 5 shows a first valve device 50 in this embodiment. The first valve device 50 has a chamber 51 in the first starting pipe 16 between the first simultaneous opening valve 15 and the first starting electromagnetic valve 17. Further, an orifice 52 is provided on the upstream side of the chamber 51.

As described above, since the first valve device 50 in the present embodiment includes the chamber 51 and the orifice 52, when the first activation solenoid valve 17 is opened, the first simultaneous opening valve 15 is pressurized. The supply of the extinguishing agent is slowed down, and the rise in the water pressure is slowed down, so that the opening speed of the first simultaneous opening valve 15 is reduced. For this reason, a water hammer (water hammer) generated with the opening of the first simultaneous opening valve 15, specifically, the second simultaneous opening valves 22a, 22b, 22
c, 22d and second starting solenoid valves 24a, 24b, 24
Water hammer on c and 24d can be prevented.

[0051]

As described above, according to the present invention, it is possible to detect a fire at an early stage and immediately extinguish it, to minimize water damage due to a fire extinguishing agent, and to further reduce water damage due to malfunction. A fire extinguishing system that can be reliably prevented can be provided.

[Brief description of the drawings]

FIG. 1 is a system diagram schematically showing a first embodiment of a fire extinguishing system according to the present invention.

FIG. 2 is a plan view of the embodiment.

FIG. 3 is an exemplary plan view for explaining the operation of the embodiment;

FIG. 4 is an exemplary side view for explaining the operation of the embodiment;

FIG. 5 is a system diagram showing a first valve device of a second embodiment of the fire extinguishing system according to the present invention.

FIG. 6 is a plan view for explaining the configuration and operation of a conventional fire extinguishing system.

FIG. 7 is a side view for explaining the configuration and operation of a conventional fire extinguishing system.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 fire extinguisher storage tank 2 suction pipe 3 fire extinguishing pump 4 discharge pipe 5, 11, 13, 19 gate valve 6 check valve 7, 9, 21 a, 21 b, 21 c branch pipe 8 priming tank 10 pressure air tank for starting 12 , 50 1st valve device 14 Alarm valve 15 1st simultaneous opening valve 16 1st starting piping 17 1st starting solenoid valve 18 Transport piping 20 Test circuit 22a, 22b, 22c, 22d 2nd simultaneous opening valve 23a, 23b, 23c, 23d Second starting pipe 24a, 24b, 24c, 24d Second starting solenoid valve 25a, 25b, 25c, 25d Test divider valve 26a, 26b, 26c Test pipe 27a, 27b, 27c Test valve 28a, 28b, 28c Discharge pipe 29a, 29b, 29c, 29d Discharge head 30 Smoke detector 31 Control device 51 Chamber 5 Orifice

Claims (3)

(57) [Claims] A plurality of smoke detection means for transmitting a smoke detection signal when detecting smoke; a control means for transmitting an emission signal when receiving smoke detection signals from at least two of the smoke detection means; Fire extinguishing means that operates in response to the emission signal to emit a fire extinguishing agent, wherein the control means transmits a standby signal when a smoke detection signal is received from any one of the smoke sensing means. 1 control means, and second control means for transmitting an emission signal when a smoke detection signal from any one of the smoke detection means is received, wherein the fire extinguishing means transports a fire extinguishing agent. A transport line, a first valve means provided in the middle of the transport line and opened in response to the standby signal, and a release signal provided on the transport line downstream of the first valve means, Second valve means that opens in response to Extinguishing system, comprising. 2. The fire extinguishing system according to claim 1, further comprising: a discriminating unit that identifies a smoke detecting unit that has transmitted the smoke detecting signal. A plurality of the smoke detectors are provided in each of a plurality of radiation areas forming a fire extinguishing target area of the fire extinguishing system. Providing a plurality of branch lines by branching the transport line downstream of the first valve means, and providing the second valve means for each of the plurality of branch lines; Distributing a line to the plurality of radiation areas; the second control means receiving the smoke detection signal from at least two smoke detection means provided in a common radiation area; 2. A fire extinguishing system according to claim 1, wherein a discharge signal is transmitted to said second valve means of said branch line distributed to said branch line. 3. The control means has a number calculating means for calculating the number of transmissions of the emission signal and a number setting means for setting a maximum value of the number of transmissions, wherein the number of transmissions is equal to the maximum value. 3. The fire extinguishing system according to claim 2, wherein the emission signal is not transmitted in the event of a fire.